unkx80: I'll try this one also, if there are no takers.
(This is a 4 am post, so very silly mistakes might have creeped in. =P)
Variation 1
Variation 1: Black var at 4
2 @ White circled, 3 @ Black squared , 6 @ Black circled Dieter
Variation 2
Sub-pages (up)Solution
Referenced byKanazawaProblem86